conda create -n langchain python=3.9
conda activate langchain
#pip3 install langchain langchain-core requests
#pip install langchain_community
#pip install openai

pip3 install langchain==0.3.27  langchain-core==0.3.79  requests==2.32.5
pip install langchain_community==0.3.31
pip install openai==2.6.1

